This project is about how to use AI in billiards game(POOL EIGHT BALL) so that computer can simulate as a human player to play with user. Based on the billiards game, the main idea of AI is to consider the current statement, find the best actions and predict what will user do in the next step. Compare to other billiards games, this AI is more complex. It is not only find a path to shoot the ball but also find the best action depends on prediction and evaluation.